67906697 has 4 divisors (see below), whose sum is σ = 67936896. Its totient is φ = 67876500.

The previous prime is 67906691. The next prime is 67906747. The reversal of 67906697 is 79660976.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 67906697 - 2⁶ = 67906633 is a prime.

It is a super-2 number, since 2×67906697² = 9222638994899618, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67906691) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11429 + ... + 16322.

It is an arithmetic number, because the mean of its divisors is an integer number (16984224).

Almost surely, 2^67906697 is an apocalyptic number.

It is an amenable number.

67906697 is a deficient number, since it is larger than the sum of its proper divisors (30199).

67906697 is a wasteful number, since it uses less digits than its factorization.

67906697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30198.

The product of its (nonzero) digits is 857304, while the sum is 50.

The square root of 67906697 is about 8240.5519839389. The cubic root of 67906697 is about 407.9787430454.

The spelling of 67906697 in words is "sixty-seven million, nine hundred six thousand, six hundred ninety-seven".